Protected-memory corruption via malformed Trusted OS call
Published May 15, 2026 · Updated May 15, 2026
Out-of-bounds memory access in AMD processors and graphics products allows local users controlling a TOS driver to corrupt protected memory. A compromised Trusted OS driver submits a malformed call whose bounds are not validated, permitting access outside the intended memory range. Exploitation requires control of a high-privilege Trusted OS driver; AMD reports integrity impact only and has not disclosed the called interface.
Summary
What happened
Out-of-bounds memory access in AMD processors and graphics products allows local users controlling a TOS driver to corrupt protected memory. A compromised Trusted OS driver submits a malformed call whose bounds are not validated, permitting access outside the intended memory range. Exploitation requires control of a high-privilege Trusted OS driver; AMD reports integrity impact only and has not disclosed the called interface.
The record
- CVE
- CVE-2021-26380
- Published
- May 15, 2026
- Updated
- May 15, 2026
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD Radeon RX Vega Series Graphics Cards
- Classifications
- CWE-190
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 15, 2026CVE publishedPublication date reported by the CVE source.
- May 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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